Flotation machine



F. DE MIER FLOTATION MACHINE ioct. 1s, 1927. 1, 646,351

vFiled Deo. 29, 1925 Ill IIN WITNESSES INVENTOR Frfed, Temi/erf ATTORNEYS Patented Oct. 18, 1927.

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'FRED nir Minn, or Henna, oxetanone. assIGNeni To. Winni-Aar A. nume-HAM, or

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, Frommen Animation. lednecember 29 19.25;, serial. No. jalea.,

This. invention. relates 'to' flotation naarA chinesv and. has forits Vobgect the, provision ofY a. device which. will eiiciently cause separation: ofA mineral ore and;y foreignmatter and which will discharge tli'efrothjwilthout anytendency-to throw, the pulp,v as 1n those cases,

wherecontinuous long-itudinalblades are ernployed.

A further object of the invention is the provision of a device in which the rotatable member for causing removal of Afroth or a pulp is reversible with the eliminationiof the usual central longitudinal shaft passing through the hollow operating drum which is normally provided with blades for forcing the froth or pulp from the machine.

This invention will be best understood from a consideration of the following detailed description, in view of the accompanying drawings forming a part of the specification; nevertheless it is to be' understood that the invention is not confined to the disclosure, being susceptible of such 'changes and modifications which shall define no material departure from the salient features of the invention as expressed in the appended claims.

In the drawings: Figure 1 is a view in perspective of a iotation machine Vconstructed in accordance with the principles of my invention.

Figure 2 is a vertical longitudinal section. Figure 3 is a transverse vertical section taken along the line 3*3 of Figure 2.

Referring more particularly to the draw ings, 10 designates a table to whichflanges 11 are bolted, the fianges projecting laterally from the opposite end walls 12 and 13 of the casing.- A bottom wall 14 is provided which is formed integrally with the side Walls or secured thereto in any approved manner and is held in spaced relation with the table 10 by means of the lower ends of the end walls since the bottom is connected lto said end walls at points above the extreme ends.

The side walls 15 and 16 which are formed integrally with the end walls 12 and 13 are provided with lateral flanges 17 similar to the flanges 18 of the end walls. Welded or secured in any approved manner to the inner edges of the side and end walls is an angle iron 19 which extends around the upper edge of the casing and cooperates with the flanges 17 and 18 to provide a supportfor a closure top 20. This top is bolted t'o the angesi'as; shown at 21 so that theA top.v may be readily removed-when desired;

The endfwalls are, provided with' bearings` forv shafts 22',` 'and 23j.` These; Shafts project.`

thjroihigh.- the'bearings and' into the interior of the casing' and` are provided. respectively with left andi right' hand bushings 24' and' 25. The inner end of the shaft 23 is secured to a head 26 while shaft 22 is secured to a head 27. The heads 26 and27 are located within an operating cylinder 28 having a plurality of rows of perforations 29 and 30. The perforations 29 are staggered relative to the perforations 30. These perforations are formed, as shown more particularly in Figure 3, by cutting out a lip 31 ywhich forms a paddle from the cylinder and bending the same in line with a radius passing through the longitudinal axis of the cylinder.

The staggering of the perforations in one row relative to the perforations in an adjacent row also provides for a'staggering of the lips or paddles 31. The heads 26 and 27 are secured by means of bolts or screws 32 1n the ends of the cylinder 28 and form closures. It will be seen that by the removal of the heads from the ends of the cylinder the shafts 22 and 23 may be reversed from either the left to the right or vice versa so that the cylinder may be driven in opposite directions as may be desired for a particular purpose. The heads-26 and 27 are in the form of webs to lpermit thapassage of liquids.

The side wall 16 is provided with a plurallty of perforations 33 arranged in a horizontal row and intermediate the upper and lower edges of the side wall. An apron 34 formed integrally with the lower edge of the -k side wall and also with the extensions 35 of the. end walls has an outturned fiaiige 36 disposed in line with an inclined trough 37 so that the Vmaterials which are beaten up vand caused to float in a `froth uponthe top end Wall l2 is adapted to carry oif the inaterials so thata continuous Jfeed and'discharge Will he had.

What I claim is:

1.7In a flotation machine, a casing, a cylinder in the casing, the cylinder being provided with a plurality of openings disposed longitudinally of said cylinder, a blade lo` cated adjacent an end of each opening, the blades in one row being disposed in staggered relation to the blades in the adjacent rows.`

2. In a flotation inachine, a casing, a cylinder in the casing, shafts journaled in the casing and project-ing eXteriorly of said casing,` a `web connected With eachshaft, the web being secured in the oppositeends of the cylinder, a bushing locatedon each shaft between the head -and anendwall of the casing, the bushing at one end of thefcasing being provided with a left hand thread, the

, bushing at the other end of the casing being provided with a right hand thread whereby `the liquids agitated in the casing upon rota- FRED DE Minn` 

